private void SetClipBoard()
{
if (Selection.SelectionVisibility == Visibility.Visible)
{
var buffer = _clipboardMan.GetBufferedRegion(_world, Selection.Rectangle);
buffer.Preview = _renderer.RenderBuffer(buffer);
ClipboardMan.LoadedBuffers.Insert(0, buffer);
ClipboardMan.Buffer = null;
ClipboardMan.Buffer = buffer;
}
}